Importance

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Abstract

The present invention generally provides an apparatus for forming a doped metal film on a conductive substrate. In one aspect of the invention, an apparatus is provided that includes a phosphorus doped anode used for depositing a phosphorus doped metal film, such as a seed layer, in an electrochemical deposition process. The phosphorus doped anode preferably includes an enclosure providing for flow of an electrolyte therethrough, a phosphorus doped metal disposed within the enclosure, and an electrode disposed through the enclosure and in electrical connection with the phosphorus doped metal. Another aspect of the invention provides an apparatus for electrochemical deposition of a phosphorus doped metal onto a substrate includes a substrate holder adapted to hold the substrate in a position where the substrate plating surface is exposed to an electrolyte in an electrolyte container, a cathode electrically contacting the substrate plating surface, an electrolyte container having an electrolyte inlet, an electrolyte outlet and an opening adapted to receive the substrate plating surface, and a phosphorus doped anode electrically connected to the electrolyte.

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First Claim